Changeable Color

[photog53]

I have succeed in creating a Ninja 7 indicator that creates a "moving average channel" (using DrawRegion) with semi-opaque gray channel between the SMA High and SMA Low. (thanks to the forum threads!!!)
I cannot however, seem to create a place in 'Parameters' or 'Plots' for a way to change the color of the channel. I tried creating a public entry to return a System.Drawing.Color value....but that has not worked. Can you point me to an example of code where someone has created a way to select color from the "Indicators Screen" for the channel??

NOTE: I did successfully create upper and lower 'Plots" for line colors.